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WS I Weiland; Inc. <br /> Environmental& Engineering <br /> November 13, 2019 RECEIVED <br /> Envlmnmantal Support larr <br /> NOV 14 2019 <br /> 0 TranWartatlan <br /> k. DMSION OF RECL MATION <br /> DINING&SAFETY • Land onvelopment <br /> "�ric Scott <br /> Environmental protection Specialist alning <br /> Colorado Division of Mining Reclamation & Safety . lndurt y <br /> 1313 Sherman St., Room 215 <br /> Denver, Colorado 80202 y <br /> a <br /> n <br /> Re: M-2019-025; Response to Preliminary Adequacy Review letter dated o <br /> June 7, 2019. <br /> rp <br /> rn •— <br /> Eric, <br /> a <br /> The following numbered responses correspond to your comments in the reliminary <br /> adequacy review letter dated June 7, 2019. Additional supporting documents and rn <br /> updated Exhibits have been attached. <br /> EXHIBIT D - Minina Plan (Rule §,4.4): <br /> The existing conditions map depicts gas lines and/or wells within every mining cell <br /> with the exception of Cell 2 and Cell 4. Please acknowledge that the permittee will <br /> be required to obtain the proper authorizations (owner and COGCC) for <br /> abandonment and/or relocation of these features before mining within cells <br /> containing gas lines/wells, and that these features must be abandoned and/or <br /> relocated in accordance with all applicable requirements. <br /> The permittee will obtain proper authorization for abandonment and or <br /> relocation of all oil and gas facilities occurring within any designated mining <br /> cell. It should be noted that the permittee is in the process of finalizing a <br /> surface use agreement with Anadarko Petroleum which will specify the <br /> removal of all of the oil and gas facilities occurring within the mining cells. <br /> This site is almost entirely within the floodway of the Big Thompson River, and <br /> mining activity will be taking place within less than 100 feet of the river in several <br /> areas. The applicant has not provided a flood impact analysis to demonstrate how <br /> the impacts to the prevailing hydrologic balance will be minimized during a 100 year <br /> flood event. The flood impact analysis should not only address impacts from a post- <br /> mining standpoint but should address impacts during active mining operations. <br /> PL7 Box 1e0e7. BOULDER. CO 80300 <br /> ph 3173-443-9521 <br />